Answer:
There are no statements in the question, so I explained the whole code.
Explanation:
A map consists of key - value pairs. The put method allows you to insert values in the map. The first parameter in the put method is the key, and the second one is the value. Also, the keys must be unique.
For example, map.put("123", "John Smith"); -> key = 123, value = John Smith
Even though the key 123 is set to John Smith at the beginning, it will have the updated value Steve Yao at the end. That is because the keys are unique.
Note that the key 222 also has Steve Yao for the value, that is totally acceptable.
A critical thinker is someone who is actively engaged in a thought process. Active thinking is that process of making judgments about what has happened while critical thinking involves a wide range of thinking skills that eventually leads to a desired outcome. Active thinking prompts learning during complex problems situations and provides learners with an opportunity to think about how a problem will be solved. As a result, it will help them evaluate, analyze, and intercept information.
Answer:
Option B is the correct answer for the above question.
Explanation:
- The data warehouse is a collection of large data or a database that includes historical and operational or current data. This database can be used to make the decisions for the prospects of the organization.
- The above question asked about to select the database which can collect the historical and operational data from various source. That type of database is a data warehouse that is described above. Hence option B is correct while the other is not because:-
- Option a states about data model which is used to define the database structure.
- Option c states about the relational database which is used to collect only current data.
- Option d states about the DBMS which is used to manage the relational database.
